After working for the past six months, a server no longer can see its storage. An administrator is aware that a new storage array was installed last night and was made available to this server. Which

New storage array firmware is unlikely to be the immediate cause of a sudden loss of connectivity for an existing server to its storage, especially if the issue arose after a new array installation, not a firmware update on the existing array.

If the server could previously see its storage, its switch port configuration is likely correct; a new storage array installation would not directly alter the server's physical port or its configuration.

Zoning is a critical Fibre Channel SAN configuration that controls which devices can communicate with each other on the fabric. If a new storage array was installed, the existing zoning might have been inadvertently altered or new zones might be misconfigured, preventing the server from seeing its allocated storage resources.

If the server could previously see its storage, the existing storage switch port configuration (for the old storage) is likely correct; the new array would use its own ports, and the issue is likely how the server connects to any storage via the fabric, which is managed by zoning.